Video: Simply regulating pollution will never really stop it. Mari Margil of the Community Environmental Legal Defense Fund discusses why we need a fundamental change in the way we use law to protect nature.

Paolo Lugari, the founder of Las Gaviotas in Colombia, describes how the incredible energy of the human spirit has made Las Gaviotas into a world-famous example of sustainable living in a harsh environment.

Video: Since its November 2009 launch, over 36,000 people have affirmed the Charter for Compassion, a project that sprouted from author Karen Armstrong's TED speech. Based on the Golden Rule, "Do unto others as you would have them do unto you," the charter is a result of public input from 150,000 religious and secular people worldwide.